/* IoT Monitoring Dashboard - Main Stylesheet */

/* CSS Variables */
:root {
  --primary: #00d4ff;
  --primary-dark: #00a8cc;
  --secondary: #7c3aed;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  --bg-dark: #0f172a;
  --bg-darker: #0a0f1a;
  --bg-card: #1e293b;
  --bg-card-hover: #273549;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-color: #334155;
  --border-radius: 12px;
  --border-radius-sm: 8px;

  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);

  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-darker);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Light Mode */
body.light-mode {
  --bg-dark: #f8fafc;
  --bg-darker: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p { color: var(--text-secondary); }

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

/* Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--bg-dark);
  border-right: 1px solid var(--border-color);
  padding: 1.5rem;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: var(--transition);
}

.sidebar.collapsed {
  width: 80px;
}

.sidebar.collapsed .sidebar-logo span,
.sidebar.collapsed .nav-label {
  display: none;
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 2rem;
  transition: var(--transition);
}

.sidebar.collapsed + .main-content {
  margin-left: 80px;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.top-bar h1 {
  font-size: 1.75rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.card-body {
  color: var(--text-secondary);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

@media (max-width: 1200px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .grid-6 {
    grid-template-columns: 1fr;
  }
}

/* Stats Cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon.temperature { background: rgba(239, 68, 68, 0.2); color: #ef4444; }
.stat-icon.humidity { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.stat-icon.pressure { background: rgba(139, 92, 246, 0.2); color: #8b5cf6; }
.stat-icon.online { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.stat-icon.offline { background: rgba(100, 116, 139, 0.2); color: #64748b; }
.stat-icon.alert { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }

.stat-info h3 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
}

.stat-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: var(--bg-dark);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover:not(:disabled) {
  background: #059669;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--border-radius-sm);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-checkbox input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-dark);
}

.table tbody tr {
  transition: var(--transition);
}

.table tbody tr:hover {
  background: var(--bg-card-hover);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
}

.badge-online {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.badge-offline {
  background: rgba(100, 116, 139, 0.2);
  color: #64748b;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.badge-info {
  background: rgba(59, 130, 246, 0.2);
  color: #3b82f6;
}

.badge-critical {
  background: rgba(239, 68, 68, 0.3);
  color: #f87171;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Navigation */
.nav-menu {
  list-style: none;
  margin-top: 2rem;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.nav-link.active {
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary);
}

.nav-link i {
  width: 20px;
  text-align: center;
}

/* Sidebar Logo */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}

.sidebar-logo i {
  font-size: 1.75rem;
  color: var(--primary);
}

.sidebar-logo span {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Charts */
.chart-container {
  position: relative;
  height: 300px;
  width: 100%;
}

.gauge-container {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

/* Alerts List */
.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  margin-bottom: 0.75rem;
  transition: var(--transition);
}

.alert-item:hover {
  border-color: var(--primary);
}

.alert-item.critical {
  border-left: 3px solid var(--danger);
}

.alert-item.warning {
  border-left: 3px solid var(--warning);
}

.alert-item.info {
  border-left: 3px solid var(--info);
}

.alert-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.alert-message {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.alert-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Device Card */
.device-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  transition: var(--transition);
}

.device-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.device-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.device-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.device-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
}

.device-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.error { background: var(--danger); }

.device-readings {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.reading-item {
  background: var(--bg-dark);
  padding: 0.75rem;
  border-radius: var(--border-radius-sm);
}

.reading-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.reading-value {
  font-size: 1.25rem;
  font-weight: 600;
}

.reading-unit {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Map */
.map-container {
  width: 100%;
  height: 500px;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
}

.map-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.map-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
}

.map-marker {
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-card);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--transition);
}

.map-marker:hover {
  transform: scale(1.2);
}

.map-marker.offline {
  background: var(--text-muted);
}

.map-marker.error {
  background: var(--danger);
}

.map-tooltip {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem;
  min-width: 200px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: none;
}

.map-marker:hover + .map-tooltip {
  display: block;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: var(--transition);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* Sidebar Widgets */
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 1rem;
  margin-bottom: 1rem;
}

.sidebar-widget-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* Progress Bars */
.progress {
  height: 8px;
  background: var(--bg-dark);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-bar.success { background: var(--success); }
.progress-bar.warning { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }
.progress-bar.primary { background: var(--primary); }

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.75rem 1.25rem;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Animations */
.fade-in {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-in {
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.hidden { display: none !important; }

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 300px;
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.info { border-left: 3px solid var(--info); }

/* Loading Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state h3 {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Pagination */
.pagination {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.pagination button {
  padding: 0.5rem 0.875rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover:not(:disabled) {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.pagination button.active {
  background: var(--primary);
  color: var(--bg-dark);
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}